Jump to main content
Jump to site search

Issue 22, 2014
Previous Article Next Article

Flux-assisted synthesis of SnNb2O6 for tuning photocatalytic properties

Author affiliations

Abstract

A flux-assisted method was used to synthesize SnNb2O6 as a visible-light-responsive metal oxide photocatalyst. The role of flux was investigated in detail using different flux to reactant molar ratios (1 : 1, 3 : 1, 6 : 1, 10 : 1, and 14 : 1) and different reaction temperatures (300, 500, and 600 °C). The obtained products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance UV-Vis spectroscopy, X-ray photoelectron spectroscopy (XPS), the Brunauer–Emmett–Teller method (BET), and high resolution scanning transmission electron microscopy (HRTEM). Flux-assisted synthesis led to tin niobate particles of platelet morphology with smooth surfaces. The synthesized crystal showed a 2D anisotropic growth along the (600) plane as the flux ratio increased. The particles synthesized with a high reactant to flux ratio (1 : 10 or higher) exhibited slightly improved photocatalytic activity for hydrogen evolution from an aqueous methanol solution under visible radiation (λ > 420 nm). The photo-deposition of platinum and PbO2 was examined to gain a better understanding of electrons and hole migration pathways in these layered materials. The HR-STEM observation revealed that no preferential deposition of these nanoparticles was observed depending on the surface facets of SnNb2O6.

Graphical abstract: Flux-assisted synthesis of SnNb2O6 for tuning photocatalytic properties

Back to tab navigation

Supplementary files

Publication details

The article was received on 13 Feb 2014, accepted on 02 Apr 2014 and first published on 03 Apr 2014


Article type: Paper
DOI: 10.1039/C4CP00654B
Author version available: Download Author version (PDF)
Citation: Phys. Chem. Chem. Phys., 2014,16, 10762-10769
  •   Request permissions

    Flux-assisted synthesis of SnNb2O6 for tuning photocatalytic properties

    D. Noureldine, D. H. Anjum and K. Takanabe, Phys. Chem. Chem. Phys., 2014, 16, 10762
    DOI: 10.1039/C4CP00654B

Search articles by author

Spotlight

Advertisements